This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
August 2018 DS12152 Rev 5 1/35
Teseo-LIV3F
Tiny GNSS module
Datasheet - target specification
Features
Simultaneously multiconstellation
-163 dBm navigation sensitivity
1.5 m CEP accuracy positioning
16 Mbit embedded Flash for data logging and
FW upgrade
2.1 V to 4.3 V supply voltage range
Tiny LCC 18 pin package (9.7x10.1)
Operating temperature (-40°, 85°C)
Free FW configuration
17 µW standby current and 75 mW tracking
power consumption
Description
The Teseo-LIV3F module is an easy to use Global
Navigation Satellite System (GNSS) standalone
module, embedding TeseoIII single die
standalone positioning receiver IC working
simultaneously on multiple constellations
(GPS/Galileo/Glonass/BeiDou/QZSS).
The Teseo-LIV3F modules bring the proven
accuracy and robustness of Teseo chips to the
reach of everyone: the embedded firmware and
the complete evaluation environment save
development time, while the compactness and
cost-effectiveness of this solution make it ideal for
several applications, such as insurance, goods
tracking, drones, tolling, anti-theft systems,
people and pet location, vehicle tracking,
emergency calls, fleet management, vehicle
sharing, diagnostics and public transportation.
Within its 9.7x10.1 mm tiny size, Teseo-LIV3F is
offerinDS12152g superior accuracy thanks to the
on board 26 MHz Temperature Compensated
Crystal Oscillator (TCXO) and a reduced Time To
First Fix (TTFF) relying to its dedicated 32 KHz
Real Time Clock (RTC) oscillator.
Thanks to the embedded 16 Mbit flash Teseo-
LIV3F offers many extra features such as data
logging, 7 days autonomous assisted GNSS, FW
reconfigurability as well as FW upgrades.
Teseo-LIV3F provides also the Autonomous
Assisted GNSS able to predict satellite data
based on previous observation of satellite.
Teseo-LIV3F module, being a certified solution,
optimizes the time to market of the final
applications with a temperature operating range
from -40°C to 85°C.
Table 1. Device summary
Order code Marking Temperature range
[°C]Package Packaging
Teseo-LIV3F Teseo-LIV3F -40°C, 85°C LCC-18
(9.7 mmx10.1 mm) Tape and reel
www.st.com
Contents Teseo-LIV3F
2/35 DS12152 Rev 5
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 GNSS performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Pin out description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Supported GNSS constellations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 GLONASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 BeiDou . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Galileo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Augmentation systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Satellite-Based augmentation system . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.2 QZSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.3 Differential GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4 Assisted GNSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 ST Assisted GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Predictive AGNSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.3 RealTime AGPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Clock generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Temperature-Compensated Crystal Oscillator (TCXO) . . . . . . . . . . . . . . 15
5.2 Real Time Clock (RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 I/O interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 I2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 FW update support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 FW configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DS12152 Rev 5 3/35
Teseo-LIV3F Contents
3
9 Power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.1 Hardware standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.2 Software standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11 Data logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12 Geofencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
13 Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
14 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
14.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
14.2 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
14.3 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
14.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
14.5 Recommended DC operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . 25
15 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
16 Shipping information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
16.1 Reels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
16.2 Packing cartons for reels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
16.3 ESD handling precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
16.4 Moisture sensitivity levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
17 Labelling information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
18 Reflow soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
19 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Appendix A Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
List of tables Teseo-LIV3F
4/35 DS12152 Rev 5
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. GNSS performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Teseo-LIV3F pin out description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Supported RTCM message on Teseo-LIV3F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 5. Datalog type description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 6. Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 7. Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 8. Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 9. Recommended DC operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 10. Labelling information description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 11. Soldering profile values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 12. Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
DS12152 Rev 5 5/35
Teseo-LIV3F List of figures
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List of figures
Figure 1. Teseo-LIV3F block schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2. Teseo-LIV3F pin layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 3. Teseo-LIV3F mechanical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 4. Carrier tape. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 5. Teseo-LIV3F orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 6. Cover tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 7. Plastic reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 8. PB band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 9. Labelling information of Teseo-LIV3F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 10. Soldering profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Description Teseo-LIV3F
6/35 DS12152 Rev 5
1 Description
1.1 GNSS performance
Receiver specification:
GPS L1C/A
SBAS L1C/A
QZSS L1C/A
GLONASS L1OF
BeiDou B1
Galileo E1B/C
Table 2. GNSS performance
Parameter GNSS GPS &
GLONASS GPS & BeiDou GPS & Galileo Unit
Time To First Fix (1) Cold start Warm start <32
<25
<36
<29
<30
<26 s
Hot start <1.5 <2.5 <2
Sensitivity(2),(3),(4),(5)
Tracking -163 -163 -163
dBm
Navigation(6) -158 -158 -158
Reacquisition(7),(8) -156 -156 -156
Cold start -147 -147 -147
Warm start -148 -148 -148
Hot start -154 -151 -154
Max fix rate — 10 10 10 Hz
Velocity accuracy(9) — 0.01 — 0.01 m/s
Velocity accuracy(10) —0.1—0.1m/s
Heading accuracy(9) — 0.01 — 0.01 °
Heading accuracy(10) —2.3—2.4°
Horizontal position
accuracy(11)
Autonomous <1.8(11) <1.5(11) —
mSBAS <1.5(11) ——
Accuracy of time pulse RMS 99% — — —
Frequency of time pulse — — — — —
Operational limits(12)
Dynamic(13) <4.5g <4g <4.5g —
Altitude(14) 18000 18000 18000 m
Velocity(14) 515 515 515 m/s
1. All satellites at -130 dBm - TTFF@50%.
2. Demonstrated with a good external LNA.
3. For hot start, all sats have the same signal level except one (pilot sat @-145 dBm).
DS12152 Rev 5 7/35
Teseo-LIV3F Description
33
1.2 Block diagram
Figure 1. Teseo-LIV3F block schematic
4. For BEIDOU tracking sensitivity refers to MEO sats. For GEO the tracking sensitivity is -151 dBm For GALILEO the signal
level refers to both pilot and data components.
5. For GALILEO the signal level refers to both pilot and data components.
6. Configurable Value.
7. All satellites at same signal level.
8. Minimum level to get valid fix after reacquisition.
9. 50% @ 30 m/s - linear path.
10. 50% @0.5 g - figure8 shape path.
11. CEP 50%, 24h static, Roof Antenna.
12. Verified the limit checking the fix availability.
13. Special configuration for high dynamic scenario.
14. ITAR limits.
Description Teseo-LIV3F
8/35 DS12152 Rev 5
1.3 Pin configuration
Figure 2. Teseo-LIV3F pin layout
1.4 Pin out description
Table 3. Teseo-LIV3F pin out description
No Name I/O Description
1 GND Ground Ground
2 TX O Serial Port Tx (if not used, must be left floating)
3 RX I Serial Port Rx
4 1PPS O Time pulse (1PPS) (if not used, must be left floating)
5 Wake-Up I External Interrupt Pin (if not used, must be left floating)
6 Vbatt I Backup voltage supply
7 VCC_IO I IO Supply Voltage (3.3 V)
8 VCC I Supply voltage (from 2.1 V to 4.2 V)
9 SYS_RSTn I RESET_N (if not used, must be left floating)
10 GND_RF I Ground
11 RF_IN I GNSS signal Input
12 GND_RF Ground Ground
13 Ant_OFF O External Antenna Control (if not used, must be left
floating)
14 VCC_RF O
Output Voltage RF section. (if not used, must be left
floating)
Note: Can be used to supply external active antenna
15 Reserved I Reserved (must be left floating)
16 SDA I/O I2C Data (if not used, must be left floating)
Supported GNSS constellations Teseo-LIV3F
10/35 DS12152 Rev 5
2 Supported GNSS constellations
The embedded FW supports all the GNSS constellations (GPS, GLONASS, GALIELO,
BEIDOU and QZSS). The user can select what the application needs by FW configuration,
by default GPS+GLONASS are selected.
2.1 GPS
The Teseo-LIV3F GNSS module is designed to receive and to track the L1C/A signals
provided at 1575.42 MHz by the Global Positioning System (GPS). The Teseo-LIV3F can
receive and process GPS concurrently with Galileo and GLONASS or BeiDou (the last two
are mutually exclusive).
2.2 GLONASS
The Teseo-LIV3F module can receive and process GLONASS concurrently with GPS and
Galileo. The Russian GLONASS satellite system (ГЛОНАСС; GLObal NAvigation Satellite
System) is an alternative to US’s GPS and EU’s Galileo.
2.3 BeiDou
The Teseo-LIV3F modules can receive and process BeiDou concurrently with GPS and
Galileo. B1 signals provided at 1561.098 MHz by the BeiDou Navigation Satellite System
can be tracked by Teseo-LIV3F positioning modules. The ability to receive and track BeiDou
B1 satellite signals in conjunction with GPS results in higher coverage, improved reliability
and better accuracy especially in the difficult urban environment of the big far east cities like
Shanghai, Taipei, Singapore.
2.4 Galileo
The Teseo-LIV3F can receive and process Galileo concurrently with GPS and GLONASS or
BeiDou (the last two are mutually exclusive).
DS12152 Rev 5 11/35
Teseo-LIV3F Augmentation systems
33
3 Augmentation systems
3.1 Satellite-Based augmentation system
Teseo-LIV3F supports SBAS. SBAS is a Wide Area Differential GPS (WADGPS), it’s a
system which provides differential GPS corrections data; SBAS includes the WAAS within
the United States, the EGNOS within Europe, the Multifunctional Transport Satellite
(MTSAT)–based MSAS within Japan and Southeast Asia, and the GPS and GEO
Augmented Navigation (GAGAN) system in India.
SBAS data correction is used in the GNSS algorithm to provide a better position estimation.
The overall SBAS differential correction mechanism can be conceived as built in 2 phases:
The “Acquire and Tracking” phase
The “Decoding” phase
The “Acquire and Track” phase relates to the capacity of the acquisition engine to reliably
track the configured SBAS satellite; during decoding phase the SBAS message can be
decoded to fetch the differential corrections.
The current longitude limits for each service are:
WAAS -180 to -25 degrees
EGNOS -25 degrees to +50 degrees
GAGAN +50 degrees to +100 degrees
MSAS +100 degrees to +180 degrees
The Teseo-LIV3F software with SBAS capability implements a command interface at the
NMEA level to allow interaction with the SBAS library. It supports commands to
enable/disable the SBAS functionality.
3.2 QZSS
The Quasi-Zenith Satellite System (QZSS) is a Japanese regional communication services
and positioning information for the mobile environment in the GPS L1C/A band. QZSS in
conjunction with GPS signals provides GNSS augmentation service for the Pacific region
covering Japan and Australia. QZSS satellites are placed in a periodic Highly Elliptical Orbit
(HEO): these orbits allow the satellites to “dwell” for more than 12 hours a day at an
elevation above 70° (it means that they appear almost overhead most of the time).
3.3 Differential GPS
Teseo-LIV3F supports Differential-GPS data according to RTCM (Radio Technical
Commission for Maritime Services) 2.3.
Differential-GPS data improves position accuracy.
Teseo-LIV3F supports the following RTCM message.
DS12152 Rev 5 13/35
Teseo-LIV3F Assisted GNSS
33
4 Assisted GNSS
GNSS receivers need accurate satellite position data from at least 4 satellites to produce a
fix.
Accurate satellite data -ephemeris data- is valid for 4hrs only for GPS and 30 min only for
GLONASS.
After that time a receiver must download new ephemeris data.
Ephemeris download can take from dozens of seconds to several minutes, hours or can fail
to download.
Assisted-AGPS is a mechanism to provide ephemeris assistance from external source, this
reduces considerably the time to get fix especially in critical environments when the
ephemeris download time could be very long.
Teseo-LIV3F supports three types of Assisted GNSS.
4.1 ST Assisted GPS
The ST Assisted GPS® (STAGPS) software is able to provide predicted ephemeris to the
GNSS engine in a time frame less than the usual time (about 30 seconds) needed to
download real ephemeris from the sky. This reduces considerably the time to get fix
especially in critical environments when the ephemeris download time could be very long.
STAGPS autonomous solution works using the past real ephemeris (downloaded from the
sky and stored in its internal database) to extrapolate the parameter of future ephemeris (up
to 5 days of prediction). For these reason the STAGPS® autonomous performances (in
terms of position accuracy using predicted ephemeris) are strictly dependent on the real
ephemeris database content. In normal usage of STAGPS® autonomous, the system
automatically uploads the real ephemeris into its database as soon as new ephemeris are
downloaded from the sky. This means that the global content of the real ephemeris input
database is determined by the history of the device running periods in the past.
The Teseo-LIV3F software with STAGPS® capability implements a command interface at
the NMEA level to allow interaction with the STAGPS® library. It supports commands to
enable/disable the STAGPS® functionality or to upload ephemeris and seed into the
STAGPS® working memory. Most of the implemented commands could be used for testing
the STAGPS® performance in different working scenarios.
4.2 Predictive AGNSS
ST-Assisted GPS™ when used in systems with network data access is able to provide full-
constellation long-term prediction taking advantage of an assistance server.
This unique solution combines the advantage of universal assistance data protocol with
lightweight data access, by needing only about 8 KB bi-weekly data transfers to maintain
fast and accurate GPS performance.
Starting from this downloaded payload called "seed" ST-Assisted GPS™ is capable of
generating at the client satellite orbit predictions for up to 14 days, with very high accuracy,
for the complete GPS constellation and GLONASS constellation.
Assisted GNSS Teseo-LIV3F
14/35 DS12152 Rev 5
An unique feature of ST- Assisted GPS is the dual-mode ability to seamless fall back from
the 14-days server-based prediction to 5-days autonomous prediction capability which self-
sustains on the field depending on usage patterns. This is very useful to keep quality of the
GNSS experience should a connected device loose its ability to contact the server for
coverage or roaming issues or any other wireless connectivity problem.
4.3 RealTime AGPS
RealTime Assisted GPS (RT-AGPS) solution is a server based Assisted GPS, therefore it
requires a network connection to download assistance data from the server.
RT-AGPS works downloading by an assistance server the real time ephemeris data. Server
access is allowed thanks to internal keyword provided by Teseo-LIV3F to the Host
processor and the acquired real-time data have to be provided to Teseo-LIV3F.
Proprietary NMEA commands are supported on Teseo-LIV3F to acquire the credential
access to the external server and to inject the data to Teseo-LIV3F.
STMicroelectronics partner provides available server solution access for free on Teseo-
LIV3F solution.
RealTime A-GPS allows continuous /real-time satellite position determination.
DS12152 Rev 5 15/35
Teseo-LIV3F Clock generation
33
5 Clock generation
5.1 Temperature-Compensated Crystal Oscillator (TCXO)
Highly stable 26 MHz oscillator controls the down conversion process in RF block of the
Teseo-LIV3F. Characteristics of this component are important factors for higher sensitivity to
maximize performances especially in weak-signal environments, as well as to minimize
TTFF (Time To First Fix) and better navigation stability.
5.2 Real Time Clock (RTC)
This is an always-on power domain dedicated to RTC logic (backup system) with 32 Kbyte
SRAM and supplied with a dedicated voltage regulator.
The RTC provides a high resolution clock which can be used for GPS. It keeps the time
when the system is inactive and it’s internally used to wake up the system when in low
power mode. It has a clock trimming feature to compensate for the accuracy of the
32.768 kHz crystal and a secured time update.
I/O interfaces Teseo-LIV3F
16/35 DS12152 Rev 5
6 I/O interfaces
Teseo-LIV3F supports two I/O interfaces:
UART
I2C
both interfaces support NMEA protocol.
6.1 UART
The Universal Asynchronous Receiver/Transmitter (UART) supports much of the
functionality of the industry-standard 16C650 UART.
The UART performs serial-to-parallel conversion on data asynchronously received from a
peripheral device on RX0 pin, and parallel-to-serial conversion on data written by CPU for
transmission on TX0 pin. The transmit and receive paths are buffered with internal FIFO
memories allowing up to 64 data byte for transmission, and 64 data byte with 4-bit status
(break, frame, parity, and overrun) for receive.
6.2 I2C
Teseo-LIV3F includes a slave I2C interface configurable; I2C is a two-wire communication
interface invented by Philips Semiconductor.
Unlike all other interfaces, I2C is not able to communicate in full-duplex mode; it uses only
two bidirectional open-drain lines, Serial Data Line on pin SDA and Serial Clock Line on pin
SCL, pulled up with resistors.
Teseo-LIV3F receiver always acts as slave and it cannot initiate data transmission on the
bus; host has to periodically pull the receiver to check about data availability.
The main features are:
Normal speed (100 KHz) and Fast speed (400 KHz) supported
I2C-slave address configurable using the firmware configurator
DS12152 Rev 5 17/35
Teseo-LIV3F FW update support
33
7 FW update support
The Teseo-LIV3F receiver module can be updated with new firmware releases. The latest
firmware version is available at www.st.com and it can be installed on Teseo-LIV3F using
the available PC Tool Teseo-Suite Light.
Detailed information is available on Teseo-LIV3F software user manual.
FW configuration Teseo-LIV3F
18/35 DS12152 Rev 5
8 FW configuration
All configuration parameters are grouped in a data block. Each field is addressed by a
unique ID. The IDs are made by three digits: the most significant one represents the
parameter type and the others are used to identify different parameters of the same type.
Default setting of configuration data block is hard coded into the binary image file.
A new configuration can be built using the PC Tool Teseo-Suite Light, available at
www.st.com or using runtime configuration commands raised by the host.
DS12152 Rev 5 19/35
Teseo-LIV3F Power mode
33
9 Power mode
Standby mode, is the mode where only low power backup domain is running. It means
VBAT must be always maintained. It allows to have very low current consumption and fast
GNSS reacquisition at the end of the standby time due to RTC.
Teseo-LIV3F offers two different ways of standby:
Hardware standby
Software standby
9.1 Hardware standby
This standby is ensured by switching OFF VCC (pin 6) and VCC_IO (pin 7) supplies and
setting SYS_RESETn (pin 9) to 0 V. It can be activated asynchronously from GNSS binary
with one GPIO switching OFF the supplies from a host.
During this standby only VBAT (pin 6) is kept ON.
It ensures a current below 6 µA. During this standby mode VCC_RF (pin 14) is OFF.
9.2 Software standby
Software standby is activated by the internal binary.
Software standby can be:
Host driven standby: where the host raises a NMEA commands to force Teseo-LIV3F
in standby; host can woken up Teseo-LIV3F using the Wakeup pin (pin 5);
Periodic standby: where Teseo-LIV3F enters and exits from standby using internal
RTC. Periodic fixes are from 5 seconds up to 24 hours between 2 fixes.
It ensures a current below 12 µA on Teseo-LIV3F. Be careful that VCC_RF is ON during this
standby, then in case of active antenna or external LNA, it is important to switch them OFF.
Timing Teseo-LIV3F
20/35 DS12152 Rev 5
10 Timing
Teseo-LIV3F receivers can be used to provide highly accurate time information. The Teseo-
LIV3F Timing module includes a specific Time Mode, which assumes a known antenna
position and calculates a time pulse synchronized to either GPS /UTC(USNO)
/GLONASS/UTC(SU).
Teseo-LIV3F provides an accurate one pulse-per-second.
DS12152 Rev 5 21/35
Teseo-LIV3F Data logging
33
11 Data logging
Data logging allows the Teseo-LIV3F receiver to locally save the resolved GNSS position to
the flash in order to be retrieved on demand from the host.
Teseo-LIV3F supports only one datalog at a time.
Datalogging can be enabled, disabled and erased using proprietary NMEA runtime
commands.
Datalogging subsystem supports both:
Circular buffer
Standard buffer
The recorded data is configurable; datalogging supports three types of data logged.
Each type has a different size and different data logged. All the data logged types have:
timestamp, latitude and longitude while other fields depend by the type. See Table 5. for
details.
Teseo-LIV3F can support until 12 hours logging using log-type 1 and fix rate at 1 Hz.
Detailed information is available on Teseo-LIV3F software user manual.
Table 5. Datalog type description
Type Size Altitude Odometer Geo Quality Qual_idx Fix Speed
112 — — X — X X —
216 X — X X — X X
320 X X X X — X X
Geofencing Teseo-LIV3F
22/35 DS12152 Rev 5
12 Geofencing
Geofence feature allows the Teseo-LIV3F receiver to raise an autonomous NMEA message
when the resolved GNSS position is close to a specific circle, entering or exiting from a
circle.
Teseo-LIV3F receiver supports at least 8 circular areas where 4 circular areas are
configurable in the firmware.
Geofencing alarm can be notified over proprietary NMEA message.
Geofencing can be configured and enabled in the firmware configurator or using the specific
geofencing configuration command.
Detailed information is available on Teseo-LIV3F software user manual.
DS12152 Rev 5 23/35
Teseo-LIV3F Odometer
33
13 Odometer
Teseo-LIV3Freceiver supports Odometer feature.
Odometer provides information on the traveled distance using only positioning information.
Odometer can be configured using specific odometer commands during the runtime.
While enabled the odometer reports the ground distance from the last reset.
Odometer is also able to raise an autonomous message alarm when a programmed
distance is reached.
Detailed information is available on Teseo-LIV3F software user manual.
Electrical characteristics Teseo-LIV3F
24/35 DS12152 Rev 5
14 Electrical characteristics
14.1 Parameter conditions
Unless otherwise specified, all voltages are referred to GND.
14.2 Minimum and maximum values
Unless otherwise specified the minimum and maximum values are guaranteed in the worst
conditions of ambient temperature, supply voltage and frequencies by tests in production on
100% of the devices with an ambient temperature at Tc = 25°C.
14.3 Typical values
Unless otherwise specified, typical data are based on Tc = 25 °C, VCC=3.3 V,
VCC_IO=3.3 V. They are given only as design guidelines and are not tested.
Unless otherwise specified, all typical curves are given only as design guidelines and are
not tested.
14.4 Absolute maximum ratings
This product contains devices to protect the inputs against damage due to high static
voltages, however it is advisable to take normal precautions to avoid application of any
voltage higher than the specified maximum rated voltages.
Table 6. Voltage characteristics
Symbol Parameter Min Max Unit
VCC Digital supply voltage 2.1 4.3 V
VBAT Backup LDO input supply voltage 2.1 4.3 V
Table 7. Thermal characteristics
Symbol Parameter Min Max Unit
Toper Operative ambient temperature -40 85 °C
DS12152 Rev 5 25/35
Teseo-LIV3F Electrical characteristics
33
14.5 Recommended DC operating conditions
Table 8. Power consumption
Symbol Parameter Test condition Typ Unit
Pw Power consumption in
standard condition
G2 = GPS only;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
72 mW
G2 = GPS/Glonass;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
90 mW
G2 = GPS/Beidou;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
85 mW
PwStandby Power consumption
STANDBY mode
RTC running = 32.768 KHz;
Tc = 25 °C;
VCC = VCC_IO = 0 V
Vbat = 3.3 V
29 µW
Table 9. Recommended DC operating conditions
Symbol Parameter Min Typ Max Unit
VCC Power supply pins 2.1 3.3 4.3 V
VCC_Bat Power supply pins for backup internal
logic 2.1 3.3 4.3 V
VCC_IO IO Supply Voltage 3.0 3.3 3.60 V
DS12152 Rev 5 27/35
Teseo-LIV3F Shipping information
33
16 Shipping information
Teseo-LIV3F is delivered as reeled tapes.
For protection from physical damage, the reels are individually packed in cartons.
16.1 Reels
Teseo-LIV3F reel specification is as shown in Figure 4
Figure 4. Carrier tape
Figure 5. Teseo-LIV3F orientation
DS12152 Rev 5 29/35
Teseo-LIV3F Shipping information
33
Figure 8. PB band
16.2 Packing cartons for reels
To avoid damage each Teseo-LIV3F reel has a dedicated carton box of 340 x 340 x 38 mm.
16.3 ESD handling precautions
Teseo-LIV3F module is Electrostatic Sensitive Devices (ESD). Observe precautions for
handling! Failure to observe these precautions can result in severe damage to the GNSS
receiver.
GNSS receivers are Electrostatic Sensitive Devices (ESD) and require special precautions
when handling. Particular care must be exercised when handling patch antennas, due to the
risk of electrostatic charges.
16.4 Moisture sensitivity levels
The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions
required.
Teseo-LIV3F modules are rated at MSL level 3 (three).
Labelling information Teseo-LIV3F
30/35 DS12152 Rev 5
17 Labelling information
The labelling of Teseo-LIV3F reports product information.
Information layout of the product is shown in Figure 9: labelling information.
Figure 9. Labelling information of Teseo-LIV3F
Information description are reported in the following Table 10.
Table 10. Labelling information description
Items Description
Internal production code Information code related only to the production line
QR Sample code QR Sample code used for traceability information of any parts
Product Name Official product name for Ordering Code
Pin 1 hole Hole on the shield to identify Pin 1
DS12152 Rev 5 31/35
Teseo-LIV3F Reflow soldering profile
33
18 Reflow soldering profile
The Teseo-LIV3F is a high temperature strength surface mount GNSS module supplied on a
18 pin, 6-layer PCB. The final assembly recommended reflow profiles are indicated here
below.
Soldering phase has to be executed with care: in order to avoid undesired melting
phenomenon, particular attention has to be taken on the set up of the peak temperature.
Here following some suggestions for the temperature profile based on following
recommendations.
Figure 10. Soldering profiles
Table 11. Soldering profile values
Profile feature PB-free assembly
Average ramp-up rate (TSMAX to Tp)3 °C/sec max
Preheat:
– Temperature min (TSmin)
– Temperature max (TSmax)
–Time (t
Smin to tSmax) (tS)
150 °C
200 °C
60-100 sec
Time maintained above:
– Temperature (TL)
–Time (t
L)
217° C
60-70 sec
Peak temperature (TP) 245 +/- 5 °C
Time within 5 °C of actual peak temperature (TP) 10-20 sec
Ramp-down rate 6 °C/sec
Time from 25 °C to peak temperature 8 minute max.
ECOPACK®Teseo-LIV3F
32/35 DS12152 Rev 5
19 ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Revision history Teseo-LIV3F
34/35 DS12152 Rev 5
Revision history
Table 12. Revision history
Date Revision Changes
20-Jun-2017 1 Initial release.
07-Aug-2017 2 Updated unit value for the symbol PWStandby in Table 8.
19-Dec-2017 3 Added Chapter 17: Labelling information.
Added Chapter 18: Reflow soldering profile
12-Apr-2018 4
Added Table 1: Device summary.
Updated Features in cover page from “163 dBm navigation
sensitivity” to “-163 dBm navigation sensitivity”.
Chapter 4: Assisted GNSS :
– updated the sentence from “Teseo-LIV3F supports two
types of Assisted GPS.” to “Teseo-LIV3F supports three
types of Assisted GNSS.”
Added Section 4.2: Predictive AGNSS.
Added Section 16.3: ESD handling precautions .
In Table 11: Soldering profile values updated value of
“Peak temperature (TP)” from “240 + 0 °C” to “245 +/- 5 °C”
Removed Chapter “Regulatory compliance”.
01-Aug-2018 5 Added Section 16.4: Moisture sensitivity levels
DS12152 Rev 5 35/35
Teseo-LIV3F
35
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